Mallet having interchangeable percussion heads



g 1950 M. PEMMERL MALLET HAVING INTERCHANGEABLE PERCUSSION HEADS Filed Oct. 31, 1947 m M A U m W Patented Aug. 8, 1950 OFF -- MALLET HAVING INTERCHANGEABLE rmtc ssIoNnEADs- I Michael P emmerl, (:lhatham, N. .l'., I Application' october 31, 1947, Serial No. 783,312

1 Claim. (01. 1455 36),

This invention relates to improvements in mallets for industrial use; and the invention has reference, more particularly, to a novel mallet structure including interchangeable percussion members. i

The invention has for an object to provide a mallet so constructed that its head may be equipped with interchangeable percussion members of selected materials possessing desired qualities, such as various degrees of hardness, or other characteristics which suitably qualify the same for given uses, especially in the industrial field.

The invention has for another object to provide a mallet structure adapted to include interchangeable percussion members;-. and novel means for detachably connecting said members with the mallet head, including means to sus tain and reenforce'the bases of said members, when made of deformable material, againstdeformation likely to interfere with easy manipulation thereof when it is desired to detach the same from the mallet head.

A further object of the invention is to provide in combination with a mallet head and detachable interchangeable percussion members'the'refor, means interposed between said head and members which serve the double purpose of binding the members to the head against accidental loosening when in use, as well as to provide means to prevent undue transmission of stock, developed by impact of the percussion members in use, to the head and handle of the mallet.

Other objects of this invention, not at this time more particularly enumerated, will be understood from the following detailed description of the same.

Illustrative embodiments of this invention are shown in the accompanying drawing, in which:

Fig. 1 is a side elevational View of a mallet according to the invention; Fig. 2 is a fragmentary end View, observed from the left in Fig. 1, and with parts in section; Fig. 3 is a fragmentary side view similar to that of Fig. 1, but showing the attached percussion members and associated parts in section.

Fig. 4 is a fragmentary view, also similar to that of Fig. 1, but showing a different character of percussion member attached to one end of the head, said member being shown in section; and Fig. 5 is a fragmentary end view, observed from the left in Fig. 5, and with parts in section.

Similar characters of reference are shown in the above described views, to indicate corresponding parts.

Referring to the; drawings, the. reference char.- acter ll} indicatesthe head of. the mallet strucs .ture, the same usually comprising a cylindrical body of tough metal, such as steel, wrought iron or the like. Thehandle H of the mallet is engaged with the head I!) by an end portion 12 thereof which extends transversely through the head intermediate its ends, said vend'portion [2 of the handle beingaflixed to the head in any customary or known manner. Extending axially from opposite end faces of the head H] are ex.- ternally screw-threaded coupler studs l3, which preferably form integral parts ofsaid head.

Percussion members of selected materials and characteristics are adapted to be interchangeably mounted onthe respectiveen-ds of the head "I by screwing the same onto the coupler studs l3.

Illustrative of some types of percussion members with which the mallet head may be provided, Fig; 1 shows a percussion member [4 made of a selected relatively hard metal, such e. g. as iron, steel, bronze, brass or the like, which is mounted on the right hand end of the head l0. When the percussion member I4 is formed from a hard metal or like hard material, the same is penetrated at itsinner end by an internally screw-threaded socket i5 sized to screw onto the axial stud i3 of the head I ll. Interposed between the inner end face of the percussion member l4 and the opposing end face of the head Ill, so as to surround the stud I3, is a washer I6, of appreciable thickness, made of resilient material, such as soft rubber or like material which possesses both resiliency and strong frictional characteristics.

As also shown in Fig. 1, mounted on the opposite or left hand end of the head I I! is a percussion member I! which is made from a selected comparatively soft material or metal, such e. g. as lead, rubber or other plastic material, or other resilient material. When the percussion memher I! comprises such comparatively soft or resilient material, the same is provided at its inner end portion with an embedded, axially disposed ferrule element l8 which is made of hard metal or like relatively hard material. Said ferrule element I 8 is provided with external annular flanges [9 or like means disposed to project from its periphery, about which the material of the percussion member I! is molded, whereby said ferrule element is immovably affixed in interlocked relation to the mass of said percussion member. Said ferrule element I8 is provided with an internally screw-threaded bore 20 sized to screw onto the axial stud l3 which projects ber l1, and a peripheral annular flange or skirt 22 disposed to surround and embracettheperiphcry of the percussion member I! adjamentithe inner end face of the latter. Interposed between the inner end of the thus reenforced percussion member I! and the opposingendiface oft-the head:

l0, so as to surround the stud I: which projects from the latter, is a washer 23, of appreciable thickness, made of resilient material such as soft rubber or like material, which po both resiliency and strong frictional characteristics. The-frictional and cushioning washers-wand 28, as interposedbetweenthe respective percussion members l fand iT'anc'l the mallet-head l8, serve the two-fold purposeof setting up a strong frictional resistance against tendency ofsaldper cussion mernbers to accidentally loosen or turn on the coupling studs '13" when the malleti's in use, while at the same time-said washers 'act as impact shock absorbing means'whereby todiminish' transmission of impact shocksfrom "said'percussion' members through the head and handle of the mallet to the hand of the user.

Referring to Figs. 4 and 5, there therein" another'type of percussion member-with which the'mallet may be provided, the samecom' prising a; bodyid formed. by-a stripofraufhide wound into siibstantially cylindrical term, and which is held in such conformation by an annular socket ring 23' which embraces the innerend portion thereof; Said socket ring is .pnovided with acentral" hub portion having anzinternally screw-threaded bore '21- to receive acoupling stud i3, whereby-to operatlvely'mountathe percussion member body 24 on .themafleti head 1!; As in thecase of the percussion memberwfl;

is shown a frictional and cushioning washer 23 is interposed between the socket ring 25 and the opposing end face of the mallet head Hi.

It will be obvious that percussion members of various selected material not specifically shown may be provided for interchangeable use in the mallet structure according to this invention, but which will en body the attachment features hereinaibove' described for f's'eparablyi conriecting the same in operative relation to the mallet head.

, Having now described my invention, I claim:

' A mallet having a head transverse to its handle-,said headl ning a screw-threaded couplin studzpmjecting axially from an end thereof. a

percussion member made of relatively soft material suchas lead, an internally screw-threaded ferrule. made, of, hard metal imbedded in said percussion member, said ferrule having external annular flanges by which it is interlocked with the percussion member as a unitary part thereof, said coupling: stud beingwcnewed into, said ferrulawhereby-to attach thepercuesion men'sber-to the head;;a perforate cupped reenforcing member, of handvrigidmateriale sagedsove'r said coupling stud and embracing the innenendlpon tion .ofxthe percussion member, :and. a perforate rubber washer 06' substantialthickness also errgazed oversazid couplins' studand disposed intermediate the: cupped reenforcin member and themed. 1 l ,7 I

v a PEMMERL.

REFERENCES CITED The.following references are of record in the fiieofjthispatent:

UNI'IEUS'IA'IES PATENTS 

